\section{Social Network Services and Social Web}\label{sec:snsw}

Groups: a loosely couple system of mutually interacting interdependent members,projects, and technology with a shared collective identity[McGrath 1984] psychological and temoral boundaries. interact with each other. Task-oritented groups.

Group is more than just the collection fo members and their connections. It's also in part defined by its purpose. (book)


\subsection{Social Netowrk Services}\label{subsec:sns}
\subsection{Social Web Platform









s}\label{subsec:swp}